Content-Type: text/html; charset=UTF-8 Double Star Calculator - Orbital Elements

Double Star Calculator - Orbit

- Revision:		$Rev: 1216 $
- Report created:		2025-07-11 16:53:43

Orbital Elements for HDS477

WDS:	HDS477	WDS ID/Discoverer
P:	59.500	Orbital period (years)
a:	0.159	Semi-major axis (arcseconds)
i:	38.5	Inclination (degrees)
Ω:	127.1	Longitude of ascending node (degrees)
T:	2012.960	Epoch of periastron passage (year)
e:	0.867	Eccentricity
ω:	67.7	Longitude of periastron (degrees)
Start-Year:	1996.0	Year
End-Year:	2054.0	Year
Epoch:	2025.0	Besselian Epoch

Further data from the WDS Sixth Catalog of Orbits for HDS477

Position:	034615.64-663014.5	Epoch-2000 right ascension and declination
WDS-ID:	03463-6630	WDS designation
Discoverer Code:	HDS477	Discover designation and components
ADS number:	.	Aitken Double Star catalog
HD number:	24136	HD catalog number
Hipparcos number:	17604	Hipparcos catalog number
V1:	8.40	Magnitude of the primary
V2:	8.62	Magnitude of the secondary
Equinox:	2000	Equinox
Date:	2017	Date of last observation
Orbit grade:	4	Orbit grade, ranging from 1 'definitive' to 5 'indeterminate'
Flags:		Flags

Double Star Orbit for HDS477

WDS 6th Orbit including measures of HDS477

Image from the USNO WDS 6th Orbit Catalog (see Acknowledgements)

Ephemeris of HDS477

Click to expand/collapse ephemeris:

Year       Sep[“]   PA[°]
---------------------------------------------
2025.0     0.196    349.2
-------------------------
1996.0     0.205     24.2
1997.0     0.199     25.6
1998.0     0.194     27.2
1999.0     0.187     28.8
2000.0     0.180     30.6
2001.0     0.173     32.5
2002.0     0.165     34.6
2003.0     0.157     36.8
2004.0     0.148     39.4
2005.0     0.139     42.3
2006.0     0.128     45.7
2007.0     0.117     49.6
2008.0     0.105     54.5
2009.0     0.092     60.6
2010.0     0.077     69.0
2011.0     0.061     81.5
2012.0     0.041    105.1
2013.0     0.017    197.6
2014.0     0.045    296.0
2015.0     0.072    314.3
2016.0     0.093    323.1
2017.0     0.111    328.9
2018.0     0.126    333.2
2019.0     0.139    336.6
2020.0     0.151    339.4
2021.0     0.162    341.8
2022.0     0.172    344.0
2023.0     0.180    345.9
2024.0     0.188    347.6
2025.0     0.196    349.2
2026.0     0.202    350.8
2027.0     0.208    352.2
2028.0     0.214    353.5
2029.0     0.218    354.8
2030.0     0.223    356.0
2031.0     0.227    357.2
2032.0     0.230    358.3
2033.0     0.233    359.4
2034.0     0.236      0.5
2035.0     0.238      1.6
2036.0     0.240      2.6
2037.0     0.241      3.7
2038.0     0.242      4.7
2039.0     0.243      5.7
2040.0     0.243      6.7
2041.0     0.243      7.7
2042.0     0.243      8.7
2043.0     0.242      9.7
2044.0     0.241     10.8
2045.0     0.240     11.8
2046.0     0.238     12.8
2047.0     0.236     13.9
2048.0     0.234     15.0
2049.0     0.231     16.1
2050.0     0.228     17.2
2051.0     0.225     18.4
2052.0     0.221     19.6
2053.0     0.217     20.8

Disclaimer

Acknowledgements

The Double Star Calculator - Orbital Elements makes use of the Washington Double Star Sixth Catalog of Orbits of Visual Binary Stars, maintained at the U.S. Naval Observatory.